Skip to page content
Home » Walking » Clothing » Coats & Jackets » Insulated » Flux Jacket

Delivery Country and Currency Selector

Please select your delivery country from the drop down below.

Please select your currency from the drop down below.

Update site with selected country and currency

We now ship to United Kingdom from £0.00

If you are not visiting from United Kingdom please select
your country from the drop down below.

Continue To GO Outdoors

Montane Flux Jacket

Discount Card Price
Retail Price £140.00Was £126.00

Colour: Electric Blue - Collect Only
Collect In-Store
Collect In-Store
Available for Reserve & Collect
With your Discount Card

Home Delivery
Home Delivery
Not Available for Home Delivery

International Delivery
International Delivery
Not Currently Available for International Delivery - For Selected Countries


Warmth and weather protection for the mountains - or anywhere cold and windy.

The Montane Flux Jacket has been designed for moving fast in cold mountain conditions.

With a DWR-treated Pertex outer face, and dual-layered PRIMALOFT® insulation, it's water-resistant and completely windproof, while retaining good breathability - in short, it will keep you comfortable in cold and windy conditions all day long. When the weather improves the Flux stuffs into its own right hand pocket to save space in your pack.

The Montane Flux Jacket's 100g and 60g PRIMALOFT® insulation is layered in such a way as to maximise insulation without compromising comfort. Double thick at the chest pockets, thick on the body but thinner at the hood and arms, the Flux Jacket is super packable, windproof and exceptionally fast drying.

A rollaway hood with wired peak, volume adjuster and single-hand operated non-whip face aperture drawcords, with a DWR Beardguard lined collar, will keep you shielded from the elements. Two handwarmer pockets are placed conveniently clear from your waist belt or harness, and the glove compatible cuffs feature mitt-grab tabs. Subtle SCOTCHLITE™ reflective detailing will help to keep you visible in poor light.


Tested on the bigwalls of Patagonia's Fitzroy, the Montane Flux Jacket will stand up to some of the most changeable weather conditions on earth.

High performance synthetic mid-loft insulation
Warm when wet and fast drying
Wind-resistant and water repellent
Compresses like down
Fibres produced from post consumer and post industrial plastic waste
Minimum of 50% recycled content


Windproof: Yes
Breathability: Excellent breathablity
Fabric: Pertex Microlight
Fill Type: PRIMALOFT® Eco 100g / 60g
Insulation Type: Synthetic
Packable: Yes
Packaway hood: Yes
Toggle Closure on hood: Yes
Volume Adjustable hood: Yes
Waterproof: Water Resistant
Weight (g): 550
Wired Peak on hood: Yes

Reviews (9)

Sort By:

Add A Review

  • 5 out of 5
Warm and well thought out jacket, 24 February 2016
By Cuberider54 (Hampshire)
This overlaying belay jacket is the Montane Prism's thicker warmer brother. Therefore, you need to pick what layers you are going to wear underneath and select size accordingly. I had the same sizing issues as some other reviewers, which is something I find with Montane in general. Definitely try on before buying as their size guide is quite precise. I'm a 41" chest and 36" (ish) waist, and normally a large, but in this I fell between L and XL. There was not a lot in it, but I got the XL for a bit more room and mobility. I took a thick Rab baselayer with me to try on with the jacket. The large was OK around the chest, but (unsurprisingly) a bit tight round the tummy. On to the features. The arms are a sensible length and easy to adjust with the Velcro cuffs. The hood stowage process is a bit Heath Robinson. It could have done with a velco tab like the Rab Genarator. The zips are substantial and very smooth to operate with one hand. The front top zip could do with having a camlock, as it tends to come down by itself. The pockets are spacious and well placed for if you have a harness. The jacket is warm, breathable and very comfortable. I got mine on a price match so more than happy. Thank you Go Outdoors.

  • 5 out of 5
Amazing!!, 23 April 2014
By Jack (Stafford)
Its an amazing Jacket. The design is really good, huge pockets are practical and it is very warm! Packs away very nicely, and i like the hood design, it doesnt get in your way. I'm usually a medium/large, but i brought the jacket in XL, and its a good fit with some movability. I climb in it, and it is rugged, i was worried id it caught on anything, it would rip, but it doesnt! 10/10

  • 5 out of 5
10/10, 06 February 2014
By DKN (Herefordshire)
Bought primarily for hiking/climbing in the Brecon Beacons/Black Mountains it has now turned into my main go to two season jacket. The fit and styling is superb and perfect when scrambling, hiking or climbing, It's warm, windproof and rain resistant ideal for the British Autumn/Winters. It also looks good with a pair of jeans down the pub. Very happy with it and would definitely recommend it.

  • 4 out of 5
Flux jacket, 13 November 2013
By Mark (Carlisle)
Excellent jacket very warm ,great fit looks good with jeans as well as with your walking gear would recommend this jacket .

  • 5 out of 5
A must buy!, 04 November 2013
By Grizzly (North East, England)
Bought this jacket as I didnt quite fancy a conventional down jacket and wanted something warm to wear on my trip to Mont Blanc. I tried it on in store and it is great. Extremely warm, light weight and great placement of pockets (you can also pack away into the right hand pocket for easy storage). The hood is also great as you can fit your climbing helmet underneath, Montane seem to have cracked it with their hood designs. Great jacket very happy, very big fan of montane clothing.

prev 1 2 next

Size Guide

This size chart should act as a guide only.

Men's Size Chart
Chest Size 36 38 40 42 44 46
Waist 28 30 32 34 36 38
Inside Leg (cm) 71 76 81 86 91 96
Inside Leg (Short) (cm) 71 72.5 74 75.5 77 78.5
Inside Leg (Long) (cm) 81 82.5 84 85.5 87 88.5

Men's Size Chart
Chest Size 92 97 102 107 112 117
Waist 71 76 81 86 91 96

Women's Size Chart
6 8 10 12 14 16
Chest Size 31-33 33-34 34-36 36-37 37-38 39-40
Waist 24-25 25-27 27-28 28-30 30-31 31-33
Hip 34-35 35-37 37-38 38-40 40-42 42-43
Inside Leg 29 30.5 31 32.5 33 34

Expert Advice (1)



At GO Outdoors we offer a wide range of delivery options to suit your needs. You can come into one of our fantastic stores to collect or have your items delivered to you at your convenience.

Please see our delivery page for more information. Restrictions apply. Prices and delivery times may vary for remote or rural parts of the UK. Working days are Monday-Friday, excluding UK Bank Holidays.

Collect In-StoreCollect In-Store
Check stock and reserve items at your store for collection the same day. If the items are available for home delivery, then we can arrange to have them delivered to your local store for the following day

Free Delivery over £50 <span style='color:#ADADAD'>Free Delivery over £50  </span>
You've spent over £50, you qualify for free delivery

Next Working Day <span style='color:#ADADAD'>Next Working Day </span>
Upgrade your order to next day! Order by 8pm and get your item delivered to you the next working day.

AM Delivery<span style='color:#ADADAD'>AM Delivery</span>
Order by 8pm and get your item delivered to you by 12pm the next working day (Not available for NI, Channel Islands or Highlands)

Delivery before 10:30am<span style='color:#ADADAD'>Delivery before 10:30am</span>
Order by 8pm and get your item delivered to you by 10:30am the next working day (Not available for NI, Channel Islands or Highlands)

Saturday Delivery <span style='color:#ADADAD'>Saturday Delivery </span>
Order by 8pm Friday for delivery on Saturday (Not available for NI, Channel Islands or Highlands)

British Forces Post Office <span style='color:#ADADAD'>British Forces Post Office </span>
Forces ONLY and cannot be used for civilian or business deliveries

International Delivery<span style='color:#ADADAD'>International Delivery</span>
International Delivery will take between 7 - 10 days and you are liable for any local duty and/or taxes


Returning an Item

If you receive your order and it is not what you are expecting you can return it back to us within 30 days of receiving the goods for an exchange or refund (including the delivery charge if you return it within 14 days).

You can return your items by using Collect+ or by taking them to any GO Outdoors store (except Hathersage) using your delivery note as proof of purchase.

Unfortunately, orders paid for using PayPal cannot be returned to store and we are currently unable to offer free returns as we offer free delivery over £50 as standard.

See our returns policy for more information.